Not known Details About jual steel grating surabaya
As demonstrated in the determine, tightening the bolt results in a wedge being driven up against a sleeve, which expands it and results in it to compress against the fabric it can be currently being mounted to.Untuk memastikan angkur baja yang terpasang benar-benar kuat, ada syarat yang perlu kita lakukan yaitu saat perencanaan dan pembuatan harus